Answer :
According to Boyle's law, a gas's pressure and the volume it takes up are inversely related.
As a result, the correct answer is that the volume of 1 mol of an ideal gas will rise by a factor of 4 at a constant temperature when the pressure is dropped by a factor of 4 (at constant T).
Boyle's law can be stated as: Pressure is inversely proportional to the volume
P ∝ 1/V
The law can be advantageously stated as follows for comparing the same material under two distinct sets of circumstances:
P₁V₁ = P₂V₂
This equation demonstrates how the gas pressure reduces proportionally as volume rises. Similar to this, the gas's pressure rises as volume falls.
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